/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.tsfile;

import org.apache.iotdb.tsfile.exception.write.WriteProcessException;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding;
import org.apache.iotdb.tsfile.fileSystem.FSFactoryProducer;
import org.apache.iotdb.tsfile.read.common.Path;
import org.apache.iotdb.tsfile.utils.Binary;
import org.apache.iotdb.tsfile.write.TsFileWriter;
import org.apache.iotdb.tsfile.write.record.Tablet;
import org.apache.iotdb.tsfile.write.schema.MeasurementSchema;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import static org.apache.iotdb.tsfile.Constant.*;

/**
 * An example of writing data with Tablet to TsFile
 */
public class TsFileWriteWithTablet {

    private static final Logger logger = LoggerFactory.getLogger(TsFileWriteWithTablet.class);

    public static void main(String[] args) {
        try {
            String path = "Tablet.tsfile";
            File f = FSFactoryProducer.getFSFactory().getFile(path);
            if (f.exists() && !f.delete()) {
                throw new RuntimeException("can not delete " + f.getAbsolutePath());
            }

            try (TsFileWriter tsFileWriter = new TsFileWriter(f)) {
                List<MeasurementSchema> measurementSchemas = new ArrayList<>();
                measurementSchemas.add(new MeasurementSchema(SENSOR_1, TSDataType.TEXT, TSEncoding.PLAIN));
                measurementSchemas.add(new MeasurementSchema(SENSOR_2, TSDataType.TEXT, TSEncoding.PLAIN));
                measurementSchemas.add(new MeasurementSchema(SENSOR_3, TSDataType.TEXT, TSEncoding.PLAIN));

                // register nonAligned timeseries
                tsFileWriter.registerTimeseries(new Path(DEVICE_1), measurementSchemas);

                List<MeasurementSchema> writeMeasurementScheams = new ArrayList<>();
                // example 1
                writeMeasurementScheams.add(measurementSchemas.get(0));
                writeMeasurementScheams.add(measurementSchemas.get(1));
                writeMeasurementScheams.add(measurementSchemas.get(2));
                writeWithTablet(tsFileWriter, DEVICE_1, writeMeasurementScheams, 10000, 0, 0);
            }
        } catch (Exception e) {
            logger.error("meet error in TsFileWrite with tablet", e);
        }
    }

    private static void writeWithTablet(
            TsFileWriter tsFileWriter,
            String deviceId,
            List<MeasurementSchema> schemas,
            long rowNum,
            long startTime,
            long startValue)
            throws IOException, WriteProcessException {
        Tablet tablet = new Tablet(deviceId, schemas);
        long[] timestamps = tablet.timestamps;
        Object[] values = tablet.values;
        long sensorNum = schemas.size();

        for (long r = 0; r < rowNum; r++, startValue++) {
            int row = tablet.rowSize++;
            timestamps[row] = startTime++;
            for (int i = 0; i < sensorNum; i++) {
                Binary[] textSensor = (Binary[]) values[i];
                textSensor[row] = new Binary("testString.........");
            }
            // write
            if (tablet.rowSize == tablet.getMaxRowNumber()) {
                tsFileWriter.write(tablet);
                tablet.reset();
            }
        }
        // write
        if (tablet.rowSize != 0) {
            tsFileWriter.write(tablet);
            tablet.reset();
        }
    }
}
